menlo park fire crews demonstrated the dangers of using a turkey defrier. the real trouble happens when people overfill the oil and then drop in the bird! >> whoo! >> so make sure that everybody has a very safe thanksgiving holiday. and they enjoy it with their families and their friends and that we don't have an accident. >> the most common causes of house fires are from cooking and it doubles during the holidays >>> well, fremont police have launched an unusual investigation. they are trying to find the owners of a briefcase containing one couple's very special memories. cbs 5 reporter mike sugerman on how you may be able to help crack the case. >> reporter: it's a major metropolis our bay area but sometimes someone breaks through the noise to show we may in fact just be mayberry. with opie and andy skipping rocks down near the creek. >> something very sentimental and obviously very precious to them. >> reporter: fremont police opened the case yesterday literally. they opened a briefcase. turned in to them found at a child care center parking lot. it's th